Home / 28,019.45-42,029.21-9,294.55

Finding the Fourth Proportional to 28,019.45, 42,029.21 and 9,294.55

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Solution

The fourth proportional to 28,019.45, 42,029.21 and 9,294.55 is: 13,941.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,019.45 : 42,029.21 = 9,294.55 : x
  2. Step 2: Convert to fraction form
    28,019.45/42,029.21 = 9,294.55/x
  3. Step 3: Cross multiply
    28,019.45x = 42,029.21 × 9,294.55
  4. Step 4: Simplify right side
    28,019.45x = 390,642,511.97
  5. Step 5: Solve for x
    x = 390,642,511.97/28,019.45
  6. Step 6: Final answer
    x = 13,941.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.